---
title: "MORGENTHALER MANAGEMENT PARTNERS IX, LLC — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d174e80f-70b7-51bf-8a66-0d8df575a2c8
json: https://whiteintel.dev/api/public/dossier/d174e80f-70b7-51bf-8a66-0d8df575a2c8
identifier: sec:0001666860
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MORGENTHALER MANAGEMENT PARTNERS IX, LLC

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001666860`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/d174e80f-70b7-51bf-8a66-0d8df575a2c8  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d174e80f-70b7-51bf-8a66-0d8df575a2c8  

## Ownership & control

### Holdings / subsidiaries

- **Doximity, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/52d83ce1-3074-5a20-b553-fade7867019b
- **Doximity, Inc.** (director) — https://whiteintel.dev/entity/52d83ce1-3074-5a20-b553-fade7867019b
- **VAPOTHERM INC** (tenpercentowner) — https://whiteintel.dev/entity/80be7feb-ce75-5e4a-bdbc-6de53562b51a
- **PRINCIPIA BIOPHARMA INC.** (tenpercentowner) — https://whiteintel.dev/entity/6a36d913-a2d3-50be-abc9-858acd647053
- **RA PHARMACEUTICALS, INC.** (tenpercentowner) — https://whiteintel.dev/entity/085b3b15-4911-5fa9-89d8-fdfaa952e167

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MORGENTHALER MANAGEMENT PARTNERS IX, LLC**. Human view: https://whiteintel.dev/entity/d174e80f-70b7-51bf-8a66-0d8df575a2c8 · Structured JSON: https://whiteintel.dev/api/public/dossier/d174e80f-70b7-51bf-8a66-0d8df575a2c8._

_Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._